Made of 7-ounce FR twill:a blend of 88% cotton and 12% high-tenacity nylon. Two chest pockets with flaps. Two pass-through pockets. Left-leg utility band. Multiple tool and utility pockets. Spread collar. Two-way brass front zipper with Nomex FR zipper tape and inside and outside protective flaps. Split back construction. Pleated bi-swing back. Pleated elbows. Triple-needle stitching. Leg opening fits over boots for easy on and off. Carhartt FR label sewn on back and front pockets, HRC label sewn on left-chest pocket. NFPA 70E and NFPA 2112 compliant. Flame-resistant fabric by Mount Vernon Mills.